轮胎磨损颗粒液表现出热带和多代放大:对人口生存能力的潜在威胁
Yanchao Chai1, Xin Wang1, Haiqing Wang2
1College of Marine Science and Engineering, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China.
Journal of hazardous materials
|November 14, 2024
概括
轮胎磨损颗粒 (TWPs) 在道路排水中排泄,对水生生物构成隐藏的威胁. 低剂量暴露可以放大跨代和热带水平的毒性,随着时间的推移影响人口.
科学领域:
- 环境毒理学环境毒理学
- 生态毒理学 生态毒理学
- 水生生态学 水生生态学
背景情况:
- 轮胎磨损颗粒 (TWPs) 将有毒添加剂释放到道路下水中.
- 高剂量暴露于TWPs液可以急性毒害水生生物.
- 低剂量,慢性影响和 trofhic 转移的潜力仍然未被充分探索.
研究的目的:
- 为了调查TWPs的代代和热带放大排泄物毒性.
- 评估TWPs液对模型水生食物链的生态毒理影响.
- 为了确定低剂量暴露是否会对水生生物产生显著的不良影响.
主要方法:
- 微藻 (Chlorella pyrenoidesa) 暴露于不同的TWPs液度.
- 在多代研究中,将受污染的微藻类给 (Brachionus calyciflorus).
- 向鱼 (Cyprinus carpio) 养受污染的鱼,以评估次要消费者影响.
主要成果:
- 低于1000 mg/L TWPs浸液的微藻生长没有受到影响.
- 单一代 rotifer 暴露显示出生殖性荷尔梅斯;多代暴露抑制了第三代 (500 mg/L) 的生殖.
- 在食用暴露在250 mg/L TWPs浸出物中的鱼后,鱼幼在生存,生长和养率上表现出显著的抑制.
结论:
- TWPs的液毒性可以在整个热带层和几代人中得到放大.
- 低剂量暴露可能导致显著的生态毒性,影响水生食物链的生存能力.
- 这项研究强调了无处不在的轮胎磨损颗粒污染所带来的低估的生态风险.
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